Twitching

Twitching is a bothersome problem that involves involuntary muscle movements or fibrillations of small areas of muscle, muscle fibers or nerves. In most cases twitches go unnoticed, and when you do feel them, they tend to feel worse and more noticeable than they actually are. The most common areas of the body in which muscle twitches occur include the eyelids, calf muscles, arms, fingers, hands, head, feet, and legs.
Muscle twitches, also referred to as myoclonus, are generally harmless and tend to be more of an irritation than a cause for concern. In most cases they disappear shortly after they appear, or when the underlying cause is seen too. In some rare cases, however, body twitching can be a sign of a neurological disorder.